When foreign text{DNA} is inserted into any v | vedclass

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(C) The process of insertional inactivation is a technique used to distinguish between recombinant and non-recombinant cells.When a foreign $	ext{DNA

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Recombinant cells

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(C) The process of insertional inactivation is a technique used to distinguish between recombinant and non-recombinant cells.When a foreign $	ext{DNA}$ fragment is inserted into a selectable marker gene (e.g.,the $	ext{ampicillin}$ or $	ext{tetracycline}$ resistance gene in $pBR322$),the gene becomes non-functional.This process is known as insertional inactivation.If the vector contains the foreign $	ext{DNA}$,the marker gene is inactivated,and the cell becomes a recombinant cell.If the vector does not contain the foreign $	ext{DNA}$,the marker gene remains functional,and the cell is a non-recombinant cell.Therefore,this method is specifically used for the selection of recombinant cells.

When foreign $\text{DNA}$ is inserted into any vector,it results in inactivation of any marker gene. This is used for selection of $......\ :-$

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